Home / 21,560.54-29,753.21-12,000.32

Finding the Fourth Proportional to 21,560.54, 29,753.21 and 12,000.32

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Solution

The fourth proportional to 21,560.54, 29,753.21 and 12,000.32 is: 16,560.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,560.54 : 29,753.21 = 12,000.32 : x
  2. Step 2: Convert to fraction form
    21,560.54/29,753.21 = 12,000.32/x
  3. Step 3: Cross multiply
    21,560.54x = 29,753.21 × 12,000.32
  4. Step 4: Simplify right side
    21,560.54x = 357,047,832.26
  5. Step 5: Solve for x
    x = 357,047,832.26/21,560.54
  6. Step 6: Final answer
    x = 16,560.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.